When resizing the Minecraft Launcher it does not normally allow you to resize the Window Width smaller than ~1000px (or 1002px in my case).

SEE Launcher_minwidth

However for those Portrait 900x1440 monitor the launcher does not respect this when Maximizing.

SEE Launcher_maximized

This causes elements like the Skin page to be cut off as they are expecting the window to respect it's minimum width.

SEE Launcher_skins

This issue likely affects those on lower resolution landscape devices as well.